Cruisin' on my Bluebird

Bike did not sell on here so I sold to a very good friend and this is what he did. 1964 is the transition year from Columbus to Reynolds 531 and he went with 531 decal. Does anyone - probably @juvela know how to test for what tubing this frame was built with?
Also this was the year they made a lot of bikes for the Olympics for several countries. Yakshimesh my name a Borat.

Riding a '38 Autocycle Deluxe

Bike did not sell on here so I sold to a very good friend and this is what he did. 1964 is the transition year from Columbus to Reynolds 531 and he went with 531 decal. Does anyone - probably @juvela know hot to test for what tubing this frame was built with?